| Package | Description | 
|---|---|
| com.google.gwt.user.client.ui | Widgets, Panels, and other user-interface classes. | 
| Modifier and Type | Class and Description | 
|---|---|
| class  | AbsolutePanelAn absolute panel positions all of its children absolutely, allowing them to
 overlap. | 
| class  | DeckLayoutPanelA panel that displays all of its child widgets in a 'deck', where only one
 can be visible at a time. | 
| class  | DeckPanelA panel that displays all of its child widgets in a 'deck', where only one
 can be visible at a time. | 
| class  | DecoratedStackPanel
 A  StackPanelthat wraps each item in a 2x3 grid (six box), which
 allows users to add rounded corners. | 
| class  | FlowPanelA panel that formats its child widgets using the default HTML layout
 behavior. | 
| class  | HorizontalPanelA panel that lays all of its widgets out in a single horizontal column. | 
| class  | RootPanelThe panel to which all other widgets must ultimately be added. | 
| class  | StackPanelA panel that stacks its children vertically, displaying only one at a time,
 with a header for each child which the user can click to display. | 
| class  | VerticalPanelA panel that lays all of its widgets out in a single vertical column. |